[Vala] Need help to scroll a textview using a scale

[Manish Jain <bourne identity hotmail com>]

Hi,

I am new to vala and am trying to pick up the fundamentals.

I was trying to create a a GTK application with 3 components:

     Gtk.ScrolledWindow scrolled;
     Gtk.TextView view;
     Gtk.Scale v_scale;

The scrolled view widget is to display a text file read at run time.

I would like to the view's current contents to be controlled by the 
v_scale: when v_scale slider is 0, the view shows the beginning of the 
file, and when v_scale slider is close to 100, the view shows the last 
few characters/lines in the file.

Despite a lot of effort to write an event handler, I still cannot get 
the scale to tell the view to scroll.

Can somebody please tell me how to control the view's position with the 
scale in Vala ?

My last effort at the event handler is below (it is of no use, really):

     void scale_moved (Gtk.Range range)
     {
         int i;
         Gtk.TextIter iter = new Gtk. TextIter();
         view.get_iter_at_position(out iter, out i, 0, 0);
         iter.set_line(iter.get_line() + 10);
         view.scroll_to_iter(iter, 0, false, 0, 0);
     }

-- 
Thanks & Regards,
Manish Jain